.wapper{
  background: #f8f8f8;
  padding: 10px;
  height: 100%;
  .knowledgeContainer{
    border: 1px dotted #1890ff;
    margin-top: 10px;
    padding: 5px;
    background-color: #edf7ff;
    border-radius: 3px;
  }
  .knowledgeContent{
    overflow: hidden;
    text-overflow: ellipsis; //溢出用省略号显示
    display: -webkit-box;
    -webkit-line-clamp: 1; // 超出多少行
    -webkit-box-orient: vertical;
    width: 200px;
    float: left;
  }
}